132 lines
3.5 KiB
C
132 lines
3.5 KiB
C
/*
|
|
|
|
Copyright 1993, 1998 The Open Group
|
|
|
|
Permission to use, copy, modify, distribute, and sell this software and its
|
|
documentation for any purpose is hereby granted without fee, provided that
|
|
the above copyright notice appear in all copies and that both that
|
|
copyright notice and this permission notice appear in supporting
|
|
documentation.
|
|
|
|
The above copyright notice and this permission notice shall be included
|
|
in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
Except as contained in this notice, the name of The Open Group shall
|
|
not be used in advertising or otherwise to promote the sale, use or
|
|
other dealings in this Software without prior written authorization
|
|
from The Open Group.
|
|
|
|
*/
|
|
|
|
#ifdef HAVE_DIX_CONFIG_H
|
|
#include <dix-config.h>
|
|
#endif
|
|
|
|
#include <X11/X.h>
|
|
#include "scrnintstr.h"
|
|
#include "misc.h"
|
|
#include "os.h"
|
|
#include "windowstr.h"
|
|
#include "resource.h"
|
|
#include "dixstruct.h"
|
|
#include "gcstruct.h"
|
|
#include "servermd.h"
|
|
#include "site.h"
|
|
|
|
/*
|
|
* Scratch pixmap management and device independent pixmap allocation
|
|
* function.
|
|
*/
|
|
|
|
/* callable by ddx */
|
|
PixmapPtr
|
|
GetScratchPixmapHeader(ScreenPtr pScreen, int width, int height, int depth,
|
|
int bitsPerPixel, int devKind, pointer pPixData)
|
|
{
|
|
PixmapPtr pPixmap = pScreen->pScratchPixmap;
|
|
|
|
if (pPixmap)
|
|
pScreen->pScratchPixmap = NULL;
|
|
else
|
|
/* width and height of 0 means don't allocate any pixmap data */
|
|
pPixmap = (*pScreen->CreatePixmap) (pScreen, 0, 0, depth, 0);
|
|
|
|
if (pPixmap) {
|
|
if ((*pScreen->ModifyPixmapHeader) (pPixmap, width, height, depth,
|
|
bitsPerPixel, devKind, pPixData))
|
|
return pPixmap;
|
|
(*pScreen->DestroyPixmap) (pPixmap);
|
|
}
|
|
return NullPixmap;
|
|
}
|
|
|
|
/* callable by ddx */
|
|
void
|
|
FreeScratchPixmapHeader(PixmapPtr pPixmap)
|
|
{
|
|
if (pPixmap) {
|
|
ScreenPtr pScreen = pPixmap->drawable.pScreen;
|
|
|
|
pPixmap->devPrivate.ptr = NULL; /* lest ddx chases bad ptr */
|
|
if (pScreen->pScratchPixmap)
|
|
(*pScreen->DestroyPixmap) (pPixmap);
|
|
else
|
|
pScreen->pScratchPixmap = pPixmap;
|
|
}
|
|
}
|
|
|
|
Bool
|
|
CreateScratchPixmapsForScreen(int scrnum)
|
|
{
|
|
unsigned int pixmap_size;
|
|
|
|
pixmap_size = sizeof(PixmapRec) + dixPrivatesSize(PRIVATE_PIXMAP);
|
|
screenInfo.screens[scrnum]->totalPixmapSize =
|
|
BitmapBytePad(pixmap_size * 8);
|
|
|
|
/* let it be created on first use */
|
|
screenInfo.screens[scrnum]->pScratchPixmap = NULL;
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
FreeScratchPixmapsForScreen(int scrnum)
|
|
{
|
|
FreeScratchPixmapHeader(screenInfo.screens[scrnum]->pScratchPixmap);
|
|
}
|
|
|
|
/* callable by ddx */
|
|
PixmapPtr
|
|
AllocatePixmap(ScreenPtr pScreen, int pixDataSize)
|
|
{
|
|
PixmapPtr pPixmap;
|
|
|
|
assert(pScreen->totalPixmapSize > 0);
|
|
|
|
if (pScreen->totalPixmapSize > ((size_t) - 1) - pixDataSize)
|
|
return NullPixmap;
|
|
|
|
pPixmap = malloc(pScreen->totalPixmapSize + pixDataSize);
|
|
if (!pPixmap)
|
|
return NullPixmap;
|
|
|
|
dixInitPrivates(pPixmap, pPixmap + 1, PRIVATE_PIXMAP);
|
|
return pPixmap;
|
|
}
|
|
|
|
/* callable by ddx */
|
|
void
|
|
FreePixmap(PixmapPtr pPixmap)
|
|
{
|
|
dixFiniPrivates(pPixmap, PRIVATE_PIXMAP);
|
|
free(pPixmap);
|
|
}
|